PICAXE EXPERIMENTER BOARD (AXE090)

Transcription

1 (AXE00) Description: The PICAXE experimenter board allows circuits for any size/revision of PICAXE chip ( / / ) to be quickly tested using a prototyping breadboard. The experimenter board provides power and computer download connections, aswell as simple input and output devices for testing purposes. This datasheet provides construction and circuit information for the Experimenter board only. Please see the main PICAXE manuals for information on how to use the software and how to build circuits. Features: Supports all // pin PICAXE chips. Computer download circuit pre-configured on PCB. Large breadboard area. Regulated power supply or battery powered, with LED power indicator. LED indicator outputs. Digital switch inputs. LDR and p resistor analogue inputs. Assembly Overview: The PICAXE experimenter board is a high quality plated through PCB and is therefore relatively straight forward to assemble. However a number of the electronic components are polarised, so please ensure these components are fitted the correct way around before soldering (see table on next page). Tools required (not supplied): Soldering iron and solder Side Cutters Small pair of pliers Soldering experience is assumed. revolution Revolution Education Ltd. info@rev-ed.co.uk Web: Version. /0/0 AXE00.PMD

2 Contents: PCB PICAXE Experimenter PCB BB self adhesive protoboard (breadboard) *** align text correct way up ICH0 pin IC socket (supplied on BB) ICH pin IC socket ICH pin IC socket IC PICAXE-X microcontroller H- 0 pin SIL connector (x) H 0 pin SIL connector A 0k pin resistor array *** text on one side of device A 0R pin resistor array *** text on one side of device R k resistor (red red orange gold) R 0k resistor (brown black orange gold) R k resistor (yellow violet red gold) R 0 resistor (brown grey brown gold) C 00uF electrolytic capacitor *** +, - marked on PCB C 00nF (0) polyester capacitor RG 0 V voltage regulator *** text on device faces up L red mm LED *** flat marked on PCB L yellow mm LED *** flat marked on PCB L, PWR green mm LED (x) *** flat marked on PCB X MHz pin ceramic resonator D N00 diode *** bar end marked on PCB D BAT schottky diode *** bar end marked on PCB LDR miniature LDR POT 00k p pot resistor SW- miniature push switch (x) CONN.mm power socket CONN.mm stereo socket CONN pin screw terminal block AXE0 PICAXE serial cable (*** denotes components which must be soldered the correct way around. See notes above). (Parts D and R are only fitted on PCB version D and later) Assembly Instructions:. Solder the resistors and two diodes in position, ensuring correct polarity of the diodes.. Solder the two resistor arrays in position, ensuring correct polarity of the dot marker (shown on the text side of the device). The text side of both devices should face the LED positions.. Solder the three IC sockets in position. Solder the 0 pin, and the two 0 pin, SIL connectors in position.. Solder the capacitors and 0 voltage regulator in place. Ensure the voltage regulator is connected the correct way around (text facing up).. Solder the LEDs, resonator, LDR and p pot in position. Ensure correct polarity of the LEDs.. Solder the switches and connectors in place. Ensure the CONN stereo socket clicks into position flat on the PCB prior to soldering (it does not matter if solder joins the two pairs of contacts each side).. Peel the protective paper off the rear of the breadboard and use the self adhesive layer to carefully stick the breadboard in position (ensure the text is the correct way up).. Insert the PICAXE-X microcontroller supplied into the pin socket, pin to the left. revolution Revolution Education Ltd. info@rev-ed.co.uk Web: Version. /0/0 AXE00.PMD

3 Circuit Diagram (PICAXE-0/0M): V 0k k serial in in / out in 0 serial out in / out in / out Cable connection Circuit Diagram (PICAXE-/A/X): V k k in serial out serial in in in 0 in 0k out out PICAXE- in out out out out 0 out Circuit Diagram (PICAXE-A/X): V k out ADC 0 out ADC out ADC out ADC out 0k k serial in serial out MHz 0 in 0 PICAXE- 0 out out in in in in in in in revolution Revolution Education Ltd. info@rev-ed.co.uk Web: Version. /0/0 AXE00.PMD

4 Using the Experimenter Board: Important Notes:. Only one size of PICAXE chip should be fitted at any one time.. Only one power source should be connected at any one time.. PICAXE chip polarity (pin to left) should be observed at all times. Failure to observe any of these points may result in damage to the PICAXE chip. PICAXE Input/Output Pin Connections: The PICAXE-0 has its own input/output pin connection points. The PICAXE- and PICAXE- share pin connection points. The serial in (RCV) and serial out (TXD) signals from the download socket are connected directly to all three PICAXE chip sockets via tracks on the PCB. (NB Version d PCB now uses the enhanced download circuit with additional resistor R and shottky diode D. See the PICAXE manual for more details about this enhanced circuit.) To make connections between the input/output pin headers and the breadboard it is recommended that /0.mm single core equipment wire is used. Do not place component legs (e.g. resistors) directly in the input/output pin headers as the leg of the component may not be thick enough to make a reliable connection within the header. Use the wire to connect to the breadboard, and then place the component in the breadboard. PICAXE-0 / 0M The PICAXE-0 input/output connections are on the left hand side of the board, marked OUT0, I/O, I/O, IN and I/O. Note that OUT0 is also connected to TXD and so will flicker when a download is taking place (PICAXE-0/0M only). PICAXE- / A / X The PICAXE- input / output connections are as follows: OUT0 to OUT outputs IN0, IN, IN digital inputs or analogue inputs IN, IN digital inputs RST (IN- and ADC0- are not used). PICAXE- / A / X The PICAXE- input / output connections are as follows: OUT0 to OUT outputs IN0 to IN digital inputs ADC0-ADC analogue inputs RST Pin Pin Input Serial Out Reset Output 0 Output Output Output Reset Analogue 0 Analogue Analogue Analogue Serial Out Resonator Resonator Input 0 Input Input Input PICAXE-0 PICAXE- 0 PICAXE- 0 0 Pin 0 / Serial Out Pin Pin Input Input 0 Input Input Output Output Output Output Output Output Output Output Output Output Output Output 0 Input Input Input Input (c) Rev-Ed Ltd 00 Computer Connection: Only use the AXE0 PICAXE serial cable. For USB connection, the USB to serial adapter (part USB00) is also required. Reset Switch: The switch only s PICAXE chips with a pin ( and ). To the PICAXE-0/0M you must disconnect and reconnect the battery (or power supply). The switch also has a header connection marked RST. revolution Revolution Education Ltd. info@rev-ed.co.uk Web: Version. /0/0 AXE00.PMD

5 Power Supply: There are two options on how to provide power to the Experimenter board, but ensure only one option is connected at any one time. The PWR LED indicates power to the board.. Battery - connect a.v (xaa cell, not supplied) battery box to the screw terminals, ensuring correct polarity. Do not use or V battery packs.. Power supply - connect a regulated V DC power supply with.mm (positive tip) connector (not supplied e.g. part PWR00). The power supply connection is regulated to V by the 0 regulator and reverse polarity protected by a diode. The screw terminal battery connection is not regulated and so connects directly to the PICAXE chip. Do not use a V PP battery on this connection. Only use a.v (not V) battery pack. Input and Output Devices: Output - LEDs Three LEDs are provided (L to ). The LED will light when a positive signal is applied. The cathode of the LED is connected by a 0R resistor to. Digital Input - Switches Three switches are provided (SW to ). The input is tied low by a 0k resistor, with the switch connected between the input and V+. Therefore pressing the switch will result in a high signal. pin V+ 0R Analogue Input - LDR The LDR is arranged with a 0k resistor in a potential divider arangement. The LDR is connected between the input and V+, the resistor between the input and. Analogue Input - P Pot The p pot is a 00k device connected directly between the V+ and power rails. The wiper of the p pot is connected to the input. Prototyping board (breadboard): The prototyping board (breadboard) has 0 sets of connection points and power rails. The breadboard has 0 sets of vertical hole connection sets (0 top sets and 0 bottom sets) for making connections. The vertical sets are not connected across the centre of the breadboard. 0k 0k V+ Pin miniature LDR pin The breadboard has sets of horizontal hole power rails ( top sets and bottom sets). The horizontal sets are connected all the way across the top (bottom) of the breadboard. The four rails are all independant (not connected). Power connection points (marked V+ and ) are provided on the header beside the ends of the power rails for connecting power to the breadboard rails. revolution Revolution Education Ltd. info@rev-ed.co.uk Web: Version. /0/0 AXE00.PMD